Past Events

  • Department Colloquium: The First Luminous Objects and the Epoch of Reionization


    Adam Lidz, UPenn

    An exciting and largely unexplored frontier in observational and theoretical cosmology is to understand the properties of the universe between 400,000 years and one billion years after the big bang. Notably, the first galaxies formed in this time period, perhaps
     a few hundred million years after the big bang.  These galaxies
     strongly influenced the gas in their surroundings as well as the
     formation of subsequent generations of galaxies. The early galaxies
     emitted ultraviolet light and ionized "bubbles" of hydrogen gas around

  • Department Colloquium: Exploring the Dawn of the First Galaxies with PAPER and HERA


    James Aguirre, UPenn

    Between the surface of last scattering of the cosmic microwave background (CMB) and and the first detected galaxies at around 500 million years later lies a vast swath of unexplored history.  We know that the hydrogen in the universe was nearly completely neutral at 400,000 years after the Bang, and by a billion years later, the combined effects of the first stars, black holes, and the agglomeration of these objects into galaxies had effectively ionized all of the hydrogen in the universe, the bulk of which lies between galaxies.  Thus the history of the heating of

  • 29th Primakoff Lecture: The Galactic Center: Unveiling the Heart of our Galaxy

    DRL A8

    Professor Andrea Ghez, UCLA

    Andrea Ghez, a Professor of Physics & Astronomy who holds the Lauren B. Leichtman & Arthur E. Levine chair in Astrophysics, is one of the world's leading experts in observational astrophysics and heads UCLA's Galactic Center Group. She earned her B.S in Physics from MIT in 1987, and her PhD from Caltech in 1992 and has been on the faculty at UCLA since 1994.

  • Department Colloquium:

    Andrew Hamilton, University of Colorado Boulder

  • Department Colloquium

    Room A4, DRL

    Scott Tremaine, Institute for Advanced Study - RITTENHOUSE LECTURE
  • Department Colloquium: TBD

    Carl Haber, LBL

  • Department Colloqium: "Nanoparticles in liquid crystals, and liquid crystals in nanoparticles"

    Room A4, DRL

    Juan de Pablo, University of Chicago

  • Department Colloquium: "Gauge theories, strings and gravity"

    Room A4, DRL

    Juan Maldacena, Institute for Advanced Study

    Gauge theories, such as the one describing strong interactions, contain string-like excitations. String theory describes the quantum dynamics of strings and it reduces to gravity at long distances. The simplest versions of string theory live in a ten dimensional spacetime. We will explain how these ten dimensional strings are intimately connected to the strings that appear in four dimensional gauge theories. The four dimensional gauge theory gives rise to a gravitational theory in a higher dimensional curved spacetime.
  • Colloquium: "Isostatic Lattices: From Jamming to Topological Phonons"

    Room A4, DRL

    Tom Lubensky, University of Pennsylvania

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  • Physics Colloquium / LRSM Burstein Lecture

    3:30 pm in the LRSM Auditorium, then the reception will be in the LRSM Reading Room at 4:30.

    Michael Cates, University of Edinburgh

    "The Physics of Cellular Motility"

    The Burstein Lecture is scheduled for 3:30 pm in the LRSM Auditorium, then the reception will be in the LRSM Reading Room at 4:30.